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EFFICACIOUS: Synonyms and Related Words. What is Another Word for EFFICACIOUS?

Need another word that means the same as “efficacious”? Find 9 synonyms and 30 related words for “efficacious” in this overview.

Table Of Contents:

Efficacious as an Adjective
Definitions of "Efficacious" as an adjective
Synonyms of "Efficacious" as an adjective (9 Words)
Usage Examples of "Efficacious" as an adjective
Associations of "Efficacious" (30 Words)

The synonyms of “Efficacious” are: effective, effectual, successful, productive, constructive, fruitful, functional, potent, powerful

Efficacious as an Adjective

Definitions of "Efficacious" as an adjective

According to the Oxford Dictionary of English, “efficacious” as an adjective can have the following definitions:

Marked by qualities giving the power to produce an intended effect.
(of something inanimate or abstract) successful in producing a desired or intended result; effective.
Marked by qualities giving the power to produce an intended effect-Aldous Huxley.
Producing or capable of producing an intended result or having a striking effect.
Producing or capable of producing an intended result or having a striking effect-LewisMumford.

Synonyms of "Efficacious" as an adjective (9 Words)

constructive	Having or intended to have a useful or beneficial purpose. Constructive criticism.
effective	Able to accomplish a purpose functioning effectively. The law is effective* immediately.*
effectual	Producing or capable of producing an intended result or having a striking effect. His complaint proved to be effectual* in bringing action.*
fruitful	(of a person) producing many offspring. Memoirs can be a fruitful* source of information.*
functional	Fit or ready for use or service. A functional* role.*
potent	Having or wielding force or authority. A potent* drug.*
powerful	Of a person possessing physical strength and weight rugged and powerful. His powerful* arms.*
productive	Producing or giving rise to. His productive* years.*
successful	Having achieved fame, wealth, or social status. A successful* actor.*

Usage Examples of "Efficacious" as an adjective

The medicine is efficacious in stopping a cough.
An efficacious law.
This treatment was efficacious in some cases.
Written propaganda is less efficacious than the habits and prejudices…of the readers.

Associations of "Efficacious" (30 Words)

advantageous	Giving an advantage. Socially advantageous* to entertain often.*
availability	The state of being otherwise unoccupied; freedom to do something. They enquired as to my availability* for a game the following evening.*
beneficial	Resulting in good; favourable or advantageous. The beneficial* effect on the economy.*
cogent	(of an argument or case) clear, logical, and convincing. The newspaper s lawyers must prepare a cogent* appeal.*
communicator	An apparatus used to exchange information between individuals, ships, planes, etc. A gifted communicator.
demonstrably	In an obvious and provable manner. The claim is demonstrably* false.*
dependability	The quality of being dependable or reliable. The brand has built its reputation on rock solid dependability.
easily	With ease easy is sometimes used informally for easily. He won easily.
effective	Able to accomplish a purpose functioning effectively G B Shaw. Effective steps toward peace.
effectively	In an effective manner. Effectively this means that companies will be able to avoid regulations.
effectiveness	Capacity to produce strong physiological or chemical effects. The effectiveness* of the treatment.*
effects	Property of a personal character that is portable but not used in business. She left some of her personal effects* in the house.*
effectual	(of a legal document) valid or binding. Tobacco smoke is the most effectual* protection against the midge.*
efficacy	Capacity or power to produce a desired effect. Concern about the safety and efficacy* of the vaccine.*
efficient	(of a person) working in a well-organized and competent way. Efficient engines save gas.
efficiently	With efficiency; in an efficient manner. He worked efficiently* to accomplish the tasks set.*
expeditious	Marked by speed and efficiency. An expeditious* investigation.*
expeditiously	With efficiency; in an efficient manner. The directors will move expeditiously* to reach a conclusion.*
facilitation	Act of assisting or making easier the progress or improvement of something. The response is dependent on the frequency of stimulation and on neuromuscular facilitation.
helpful	Useful. People are friendly and helpful.
nice	Excessively fastidious and easily disgusted. Joe had been very nice* to her.*
positive	An adjective or adverb in the positive degree. Let us look at the distribution of those positives.
profitable	Yielding material gain or profit. A professionally run and profitable* company.*
readily	Without much difficulty. Transport is readily* available.*
serviceable	Fulfilling its function adequately; usable. Only twelve aircraft were fully serviceable* this morning.*
telling	An act of narration. A telling* gesture.*
trenchant	(of a weapon or tool) having a sharp edge. The White Paper makes trenchant* criticisms of health authorities.*
useful	Having a useful function. A useful* job.*
utilitarian	An adherent of utilitarianism. A utilitarian* theorist.*
valid	Legally or officially acceptable. A valid* argument.*